%0 Journal Article
%T Search for the lepton flavour violating decay B+ -> K+mu(-)tau(+) using Bs20 decays
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Henry, L.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%A Sanchez Mayordomo, C.
%J Journal of High Energy Physics
%D 2020
%V 06
%N 6
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2020
%O WOS:000545615700001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4454), last updated on Mon, 20 Jul 2020 11:49:37 +0000
%X A search is presented for the lepton flavour violating decay B+ -> K+mu (-)tau (+) using a sample of proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb(-1). The tau leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of the tau lepton is determined by using B+ mesons from Bs20 -> B+K- decays. No significant excess is observed, and an upper limit is set on the branching fractionB(B+-> K+mu (-)tau (+))<3.9x10(-5)at90%confidence level.The obtained limit is comparable to the world-best limit.
%K B physics
%K Beyond Standard Model
%K Flavor physics
%K Hadron-Hadron scattering (experiments)
%K Rare decay
%R 10.1007/JHEP06(2020)129
%U https://arxiv.org/abs/2003.04352
%U https://doi.org/10.1007/JHEP06(2020)129
%P 129-19pp